having a rating of X; not suitable for children; broadly, obscene or sexually explicit.

Visually explicit. Derived from the Motion Picture Association's rating system

Showing explicit sex acts, especially used to describe pornographic movies.

As with any medium, x-rated and adult content is widely available for mobile phones. The type of content includes adult videos, games such as strip poker, wallpapers, screensavers and message alert tones.

X-rated (also known as X certificate or X classification) is a film rating indicating strong adult content, typically sexual content and nudity, or violence and profanity.